of an overdrive to boost the gain for more distortion. Relationship to Mad Professor Amplification Björn was asked by his BJFE pedal distributor, Harri Koski, to consider designing amplifiers. Björn was fairly busy building and designing pedals for the BJFE line, and did not have the time to also build amplifiers. It was suggested a new company be created where Björn could design the effects and amplifiers, but they would be constructed and distributed under the name Mad Professor Amplification. These are pedals and amplifiers designed by Björn but not hand built by him. References External links BJFE User Forum, with user discussions and more detailed information on models Complete description of every known BJFE pedal Guide to stacking pedals written by Björn Custom Sounds, BJFE's main distributor Rare BJFE pedal gallery Electronics companies of Sweden Guitar effects manufacturing companies Manufacturing companies based in Stockholm Swedish brands